Apple has released Thunderbolt Firmware Update v1.2 to address stability issues with using Target Disk Mode (which makes one Mac appear as a hard drive to another Thunderbolt-connected Mac). The update is for only those Macs with a Thunderbolt port, and it requires OS X 10.8.3 Mountain Lion or later. As always with firmware updates, although you can download it manually, we recommend relying on Software Update or the App Store app to ensure you get the right firmware update for your Thunderbolt-equipped Mac, and be sure not to interrupt the update process. (Free, 1.22 MB)
Edit iCal Event Titles Directly
In the Leopard version of iCal, double-clicking an event shows a summary of the event, and to edit the name (or anything else), you must click the Edit button in the summary pop-up. To bypass the summary and edit pop-ups entirely, Option-double-click the event name. That selects the text for editing, and you can make any changes you want. Click outside the event to save your changes.